Elastic Anisotropy of Tire Shreds
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 125, Issue 5
Abstract
This paper deals with anisotropic elastic properties of large-size tire shreds used as lightweight fills in road and embankment construction. The anisotropy is a result of compaction and overburden pressure, which induce a layered structure of the shreds. Laboratory experiments conducted in a novel biaxial apparatus revealed a difference in Young's moduli perpendicular and parallel to the layered structure; also, Poisson's ratios differ although their values could not be determined accurately. The out-of-plane shear modulus not readily determined from the tests was assessed by means of a layered material model. The results were used for determining the settlement of two road structures containing a layer of tire shreds modeled as either an isotropic or an anisotropic elastic material. Numerical calculations using the code CIRCLY indicated that the effect of tire shreds' anisotropy on road structure settlements is moderate, and the traditional isotropic elastic analysis overestimates the actual settlements.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 125 • Issue 5 • May 1999
Pages: 383 - 389
History
Received: Jun 30, 1998
Published online: May 1, 1999
Published in print: May 1999
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